Finding the Fourth Proportional to 172,415.06, 258,611.84 and 82,521.62
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Solution
The fourth proportional to 172,415.06, 258,611.84 and 82,521.62 is: 123,777.28
Step by Step Solution
- Step 1: Write the proportion equation
172,415.06 : 258,611.84 = 82,521.62 : x - Step 2: Convert to fraction form
172,415.06/258,611.84 = 82,521.62/x - Step 3: Cross multiply
172,415.06x = 258,611.84 × 82,521.62 - Step 4: Simplify right side
172,415.06x = 21,341,067,987.98 - Step 5: Solve for x
x = 21,341,067,987.98/172,415.06 - Step 6: Final answer
x = 123,777.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.